CN105592930A - Method for recovering copper sulfide from ore containing iron sulfide - Google Patents
Method for recovering copper sulfide from ore containing iron sulfide Download PDFInfo
- Publication number
- CN105592930A CN105592930A CN201480040873.3A CN201480040873A CN105592930A CN 105592930 A CN105592930 A CN 105592930A CN 201480040873 A CN201480040873 A CN 201480040873A CN 105592930 A CN105592930 A CN 105592930A
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- Prior art keywords
- hydrogen peroxide
- flotation
- copper
- mineral slurry
- ore
- Prior art date
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- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 28
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 title claims abstract description 12
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 126
- 238000005188 flotation Methods 0.000 claims abstract description 54
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 41
- 239000011707 mineral Substances 0.000 claims abstract description 41
- 239000010949 copper Substances 0.000 claims description 53
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 45
- 229910052802 copper Inorganic materials 0.000 claims description 45
- 239000002002 slurry Substances 0.000 claims description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 32
- 229910052742 iron Inorganic materials 0.000 claims description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 8
- 239000006260 foam Substances 0.000 claims description 8
- 238000001238 wet grinding Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- -1 alkyl xanthogenic acid alkali metal salt Chemical class 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims 1
- 239000012141 concentrate Substances 0.000 abstract description 49
- 238000011084 recovery Methods 0.000 abstract description 35
- BWFPGXWASODCHM-UHFFFAOYSA-N copper monosulfide Chemical class [Cu]=S BWFPGXWASODCHM-UHFFFAOYSA-N 0.000 abstract description 3
- 230000001143 conditioned effect Effects 0.000 abstract 2
- 238000009291 froth flotation Methods 0.000 abstract 1
- 229960002163 hydrogen peroxide Drugs 0.000 description 52
- 238000009825 accumulation Methods 0.000 description 17
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 16
- 239000010931 gold Substances 0.000 description 16
- 229910052737 gold Inorganic materials 0.000 description 16
- 238000000227 grinding Methods 0.000 description 10
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 9
- 238000010790 dilution Methods 0.000 description 8
- 239000012895 dilution Substances 0.000 description 8
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 239000004088 foaming agent Substances 0.000 description 5
- 150000002431 hydrogen Chemical class 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 229910000906 Bronze Inorganic materials 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 4
- 239000010974 bronze Substances 0.000 description 4
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 230000002209 hydrophobic effect Effects 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000003002 pH adjusting agent Substances 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- RZFBEFUNINJXRQ-UHFFFAOYSA-M sodium ethyl xanthate Chemical compound [Na+].CCOC([S-])=S RZFBEFUNINJXRQ-UHFFFAOYSA-M 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910052569 sulfide mineral Inorganic materials 0.000 description 2
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 229910052951 chalcopyrite Inorganic materials 0.000 description 1
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 150000002433 hydrophilic molecules Chemical class 0.000 description 1
- 239000002955 immunomodulating agent Substances 0.000 description 1
- 229940121354 immunomodulator Drugs 0.000 description 1
- 230000002584 immunomodulator Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- CCEKAJIANROZEO-UHFFFAOYSA-N sulfluramid Chemical group CCNS(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F CCEKAJIANROZEO-UHFFFAOYSA-N 0.000 description 1
- 229960001124 trientine Drugs 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/002—Inorganic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
- B03D1/025—Froth-flotation processes adapted for the flotation of fines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/012—Organic compounds containing sulfur
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/007—Modifying reagents for adjusting pH or conductivity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/005—Fine and commodity chemicals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
In a method for recovering a copper sulfide concentrate by froth flotation from an ore containing an iron sulfide, hydrogen peroxide is added to the conditioned mineral pulp before or during flotation in an amount effective to lower the redox potential of the conditioned mineral pulp in order to improve concentrate grade and recovery of copper sulfides.
Description
Technical field
The present invention relates to reclaim the method for copper sulfide concentrate from Containing Sulfur iron ore, it has improved concentrate grade and sulphurChange the recovery of copper, and the consumption of processing chemical agent is low.
Background technology
The method that reclaims copper sulfide concentrate by flotation from ore is the most common. Ore wet-milling forms mineral slurry,Conventionally utilize and be adsorbed on copper sulfide mineral surface and the more hydrophobic trapping agent compound in copper sulfide mineral surface is processed.Then gas forms bubble through mineral slurry, and the hydrophobic granule of mineral slurry is mainly attached to the gas/liquid phase border of bubble, and with gasBubble floats, and is formed on mineral slurry top. Floating end removes from liquid surface, thereby reclaims copper sulfide concentrate.
Most copper-sulphide ores contains iron sulfide except copper sulfide, and object is to obtain the selective floating of copper sulfideChoosing, and iron sulfide is still stayed in flotation tailing.
US5110455 disclose a kind of from boiling iron sulfide the method for separation of copper sulphide, it uses oxidant to regulate ore depositChylema, this oxidant is preferably hydrogen peroxide. The document has been instructed the oxidant that adds some, by the oxidation of mineral slurryReduction potential improves 20-500mV.
The people such as Uribe-Salas, at Int.J.Miner.Process., have recorded logical in 59 (2000) 69-83 pageBefore flotation, add hydrogen peroxide that the redox potential raising 0.1V of mineral slurry has been improved from pyrite matrix thereby crossIn floatingly select selective in chalcopyrite. The amount of the hydrogen peroxide adding is adjusted to provides constant redox potential.
Summary of the invention
The present inventor had been found that before flotation or during, a small amount of hydrogen peroxide is joined and was regulatedMineral slurry in, can not improve the redox potential of mineral slurry, but produce on the contrary the effect that reduces redox potentialReally, unexpectedly, significantly improved the recovery of concentrate grade and copper sulfide.
Therefore the present invention relates to the method that reclaims copper sulfide concentrate from Containing Sulfur iron ore, and the method comprises step belowRapid:
Utilize grinding agent that ore wet-milling is formed to mineral slurry,
Utilize trapping agent compound to regulate mineral slurry, form adjusted mineral slurry, and
Adjusted mineral slurry is carried out to flotation, to form foam and flotation tailing, foam is separated with flotation tailing,Thereby recovery copper sulfide concentrate,
Wherein by hydrogen peroxide in step b) and c), or during step is c), join adjusted with effective doseIn mineral slurry, to reduce the redox potential of adjusted mineral slurry.
Brief description of the drawings
Fig. 1 has shown redox potential E in the test of embodiment 1hAnd between the amount of the hydrogen peroxide addingRelation.
Fig. 2 has shown the song that is related to of accumulation Cu Concentrate Grade (y-axle) and accumulation copper recovery (x-axle) in embodiment 2 and 3Line.
Fig. 3 has shown redox potential E in embodiment 4 testshAnd relation between the amount of the hydrogen peroxide adding.
Fig. 4 has shown the song that is related to of accumulation Cu Concentrate Grade in embodiment 5 to 7 (y-axle) and accumulation copper recovery (x-axle)Line.
Fig. 5 has shown redox potential E in embodiment 8 testshAnd relation between the amount of the hydrogen peroxide adding.
Fig. 6 has shown the relation of accumulation Cu Concentrate Grade (y-axle) and accumulation copper recovery (x-axle) in embodiment 9 and 10Curve.
Fig. 7 has shown redox potential E in embodiment 11 testshAnd pass between the amount of the hydrogen peroxide addingSystem.
Fig. 8 has shown the relation of accumulation Cu Concentrate Grade (y-axle) and accumulation copper recovery (x-axle) in embodiment 12 and 13Curve.
Detailed Description Of The Invention
Method of the present invention is used three steps to reclaim copper sulfide concentrate from Containing Sulfur iron ore.
In the first step of the inventive method, ore utilizes grinding agent to grind and forms mineral slurry, that is, and and the ore grindingWater slurry. The suitable abrasive media of ground ore can be learnt from prior art. Preferably, abrasive media comprises that iron content extremelyBe steel or the castiron lapped face of 90 % by weight less. Grinding can used the known in the state of the art of abrasive mediaAny grinding machine in carry out. Suitable grinding machine is to use the ball mill of spheroid as abrasive media, or for using rod as grindingThe rod mill of grinding media, wherein ball mill is preferred. Grinding machine preferably has high-abrasive material lining.
Ore wet-milling forms mineral slurry, that is, and and the water slurry of the ore grinding. Ore can be sent into mill together with waterMachine. Or ore and water are sent into respectively. Grind the median particle diameter that conventionally proceeds to 50-200 micron. Preferably, ore is ground toThe so-called size of dissociating (liberationsize), i.e. maximum median particle diameter, within the scope of this, all copper sulfide is sudden and violent substantiallyReveal to particle surface, and there is no that copper sulfide keeps being covered by particle.
In the second step of the inventive method, ore utilizes trapping agent compound to regulate, and forms adjusted mineral slurry. CatchCollection immunomodulator compounds is after mineral slurry, be attracted to copper sulfide surface and make surface become hydrophobic compound joining. SuitableTrapping agent compound in copper sulfide flotation is well known in the art.
Preferably, alkyl xanthogenic acid alkali metal salt is used as trapping agent, such as amylic sodium xanthogenate or ethoxy-dithioformic acidSodium. Regulate conventionally by adding conditioning agent to carry out in mineral slurry, and mix and be enough to realize conditioning agent and be adsorbed onto mineral surfacesTime, is normally less than 15 minutes, preferably 0.5 to 15 minute. Or trapping agent adds in the first step of grinding, andAnd regulate by mineral slurry being retained to the corresponding time and undertaken.
Other reagent, as foaming agent, pH adjusting agent, inhibitor and combination thereof can add at grinding steps, regulating stepEnter or two steps in all add. Foaming agent is the compound that is stabilized in the foam forming in flotation. Suitable foaming agent isCan commercially availablely obtain, trade mark as graceful in Hensel is by nameFoaming agent. Inhibitor is to make undesired mineral surfacesMore hydrophilic compound. The polyamines that prior art is known, such as diethylenetriamine or trien, can be as sulfurationThe inhibitor of iron. PH adjusting agent, as calcium oxide, calcium hydroxide or sodium carbonate, can add, and arrives with the pH value of adjusting mineral slurryDesired level, the scope that preferably arrives is in 7 to 11 value.
In the 3rd step of the inventive method, adjusted mineral slurry is carried out to flotation, form foam and flotation tailOre deposit, hydrogen peroxide is joining adjusted ore deposit during flotation or between the second step of adjusting mineral slurry and flotation stepIn chylema. Foam is separated from flotation tailing, thereby reclaim copper sulfide concentrate. Flotation can be used those skilled in the art's pinThe known equipment of flotation copper mine and program are carried out.
Flotation can be used as single-stage flotation or multistage flotation is carried out, use, as the stage of roughly selecting, the stage of scanning(scavenger), clean the stage. In multistage flotation, hydrogen peroxide is preferably before the first flotation stage or first floatingDuring selecting the stage, add.
Hydrogen peroxide is joined adjusted with the amount of the redox potential that effectively reduces adjusted mineral slurryIn mineral slurry. Preferably, hydrogen peroxide is added redox potential has been reduced at least amount of 10mV. When ore utilization bagContained when making lapped face and grind by the steel of iron content at least 90 % by weight or cast iron, add the amount of hydrogen peroxidePreferably be adjusted into and after adding hydrogen peroxide additive, provide the maximum of redox potential to reduce. The oxidation of mineral slurry alsoFormer electromotive force can be determined by the known method of prior art. Preferably, redox potential utilization has been used electrochemistry electricityThe oxidation-reduction electrode in pond is determined.
Method of the present invention only needs a small amount of hydrogen peroxide. In general, ore per ton need to be less than the peroxide of 100gChange hydrogen, preferably use and be less than 50g/t. The method can use as few as the hydrogen peroxide of ore 2g/t per ton, preferably usesAt least 5g/t.
Add when hydrogen peroxide is regulating between mineral slurry step and flotation step, and hydrogen peroxide adds between flotationTime period be preferably less than 15 minutes, be more preferably less than 3 minutes, be the most preferably less than 1 minute. Restriction hydrogen peroxideAdd the time period between flotation, the recovery that has improved concentrate grade (concentrategrade) and copper sulfide.
In the preferred embodiment of the inventive method, flotation is carried out continuously, and hydrogen peroxide connects in floatation processContinuous adding.
Hydrogen peroxide adds preferably as the aqueous solution containing 0.5-5 % by weight hydrogen peroxide. Add the mistake of this dilutionHydrogen peroxide solution, compared with the more concentrated hydrogenperoxide steam generator of equal number, provides better concentrate grade and recovery.Therefore, preferably, the hydrogenperoxide steam generator of the hydrogen peroxide that commercialization is comprised to 30-70 % by weight adds in the methods of the inventionDilute the dilute solution of the hydrogen peroxide for comprising 0.5-5 % by weight before.
Common ore per ton has the hydrogen peroxide of optimal amount, and this depends on ore composition. By added hydrogen peroxideAmount is increased to optimal amount, the raising that can cause concentrate grade and copper sulfide to reclaim, but increase add the amount of hydrogen peroxide highCan not produce any further raising in maximum, but in general even can cause that concentrate grade and copper sulfide reclaimReduce.
Prior art has been instructed, and reclaims in order to improve copper sulfide, and hydrogen peroxide should be to increase the redox electricity of oreThe amount of gesture adds the floatation process of copper sulfide ore. The present inventor has been found that hydrogen peroxide not increase mineralThe redox potential of slurry still causes in the adjusted mineral slurry of joining on a small quantity of redox potential reduction, unexpectedly aobviousThe recovery that work has improved concentrate grade and copper sulfide. More unexpectedly, for most of copper sulfide ore, by peroxidatingHydrogen adds with the amount of the redox potential that reduces adjusted ore, with a large amount of peroxidating that cause that redox potential improvesAdding of hydrogen compared, and can bring better concentrate grade and copper sulfide to reclaim.
Except improving concentrate grade and copper sulfide recovery, method of the present invention also can improve gold returning from oreReceive, and reduce the content of iron sulfide and arsenic mineral in iron sulfide concentrate.
The following examples are made explanations to the present invention, but are not intended to limit scope of the present invention.
Embodiment
In all flotation experiments, use and be furnished with the laboratory of 16*1 inch forged carbon steel rod as abrasive mediaMagotteauxOre is ground to form to particle diameter P80It is 200 microns. The mineral slurry producing is transported to laboratory flotation cellAnd mix two minutes to even. Add the amount of 21g to add sodium ethylxanthate as trapping agent with ore per ton, then per tonOre adds from Hensel gracefulH27 foaming agent 5g. The mineral producing was starched before flotation startsBy introducing air conditioning 1 minute. Specify in an embodiment given interval during flotation, to collect the concentrate of four timings. EachConcentrate is by manually scraping foam once and collect every 10 seconds from mineral slurry surface. Concentrate is weighed, chemically examines. And accumulation gradeAll calculated by these data with the rate of recovery. The relation of grade and recovery drawn go out, the specific copper recovery providing in following tableThe rate of recovery value of product place value and specific copper grade reads out from these curves.
Embodiment 1 to 3
To thering is the raw ore analysis ingredient of 1.74% bronze medal, 9.95% iron, 3.27ppm gold, 168ppm bismuth and 3.21% sulphur(headassay) deposited copper/gold ore carries out flotation.
In embodiment 1, at the hydrogen peroxide that starts at once to add before flotation variable quantity, after flotation starts at onceDetermine redox potential (Eh). Result is summarised in table 1. Fig. 1 has shown EhValue and add the pass between amount of hydrogen peroxideSystem. Fig. 1 has shown and has added a small amount of hydrogen peroxide EhReduce, add the hydrogen peroxide of more amount to increase.
The variation of amount of hydrogen peroxide that table 1 adds
In embodiment 2 and 3, the concentrate of collecting at 0.5 minute, 2 minutes, 5 minutes and 10 minutes intervals is floatedChoosing. In embodiment 2, do not add hydrogen peroxide. In embodiment 3, starting before flotation the amount with 75g/ ton ore immediatelyAdd the aqueous hydrogen peroxide solution of 1 % by weight.
Fig. 2 has shown the relation curve of accumulation Cu Concentrate Grade and accumulation copper recovery in embodiment 2 and 3. Table 2 and 3 ratiosCompared with these results under 85% copper recovery and under 18% concentrate copper grade.
Table 2 85% bronze medal reclaim under, the rate of recovery of copper and Gold Concentrate under Normal Pressure grade, copper and dilution
* not according to the present invention
IS=iron sulfide, NSG=unsulfided mine tailing)
Table 3 is copper and gold recovery and concentrate gold and dilution grade under 18% concentrate copper grade
* not according to the present invention
IS=iron sulfide, NSG=unsulfided mine tailing
Embodiment 4 to 7
Heavy to thering is the sulfide that the volcano of raw ore analysis ingredient of 2.63% bronze medal, 19.2% iron and 15.9% sulphur formsLong-pending ore carries out flotation.
In embodiment 4, the hydrogen peroxide of variable quantity just added before starting flotation at once, and redox potential(Eh) after flotation starts, determined at once. Result is summarised in table 4. Fig. 3 has shown EhValue with institute add amount of hydrogen peroxide itBetween the curve of relation. Fig. 3 has shown and has added a small amount of hydrogen peroxide, EhReduce, and add relatively large hydrogen peroxide, EhIncrease.
The variation of amount of hydrogen peroxide that table 4 adds
In embodiment 5 to 7, the concentrate of collecting every 0.5 minute, 2 minutes, 4 minutes and 7 minutes is carried out to flotation. ?In embodiment 5, do not have hydrogen peroxide to add. In embodiment 6 and 7, before flotation starts, horse back is with 15 grams, ore per ton and 240Gram amount add the aqueous hydrogen peroxide solution of 1 % by weight.
Fig. 4 has shown the relation curve between accumulation Cu Concentrate Grade and the accumulation copper recovery of embodiment 5 to 7. Table 5 and6 results while having compared 90% copper recovery and 18% concentrate copper grade.
Table 5 under 90% copper recovery, copper and Gold Concentrate under Normal Pressure grade, the dilution rate of recovery
* not according to the present invention
IS=iron sulfide, NSG=unsulfided mine tailing
Under table 618% concentrate copper grade, copper and gold recovery and concentrate dilution grade
* not according to the present invention
IS=iron sulfide, NSG=unsulfided mine tailing
Embodiment 8 to 10
PORPHYRY COPPER/gold ore is carried out to flotation, and its raw ore analysis ingredient is: copper 0.43%, iron 5.4%, golden 0.18ppm,And sulphur 5.0%.
In embodiment 8, the hydrogen peroxide of variable quantity just added before starting flotation at once, and redox potential(Eh) after flotation starts, determined at once. Result is summarised in table 7. Fig. 5 has shown EhValue with institute add amount of hydrogen peroxide itBetween the curve of relation. Fig. 5 has shown and has added a small amount of hydrogen peroxide, EhReduce, and add relatively large hydrogen peroxide, EhIncrease.
The variation of amount of hydrogen peroxide that table 7 adds
In embodiment 9 and 10, to every 0.5 minute, 2 minutes, 4 minutes and the concentrate collected for 9 minutes carried out flotation. ?In embodiment 9, do not have hydrogen peroxide to add. In embodiment 10, before starting, flotation adds with the amount of 120 grams, ore per ton at onceEnter the aqueous hydrogen peroxide solution of 1 % by weight.
Fig. 6 has shown the relation curve between accumulation Cu Concentrate Grade and the accumulation copper recovery of embodiment 9 and 10. Table 9With 9 compared under 70% copper recovery and 9% concentrate copper grade under these results.
The rate of recovery of table 8 copper and Gold Concentrate under Normal Pressure grade, copper and dilution under 70% bronze medal reclaims
* not according to the present invention
IS=iron sulfide, NSG=unsulfided mine tailing
Table 9 is copper and gold recovery and concentrate gold and dilution grade under 9% concentrate copper grade
* not according to the present invention
IS=iron sulfide, NSG=unsulfided mine tailing
Table 9 has shown in copper and the golden rate of recovery extra raising.
Embodiment 11 to 13
(hosted) copper/gold ore to ferriferous oxide matrix carries out flotation, and its raw ore analysis ingredient is: copper 0.83%,Iron 21.7%, golden 0.39ppm, arsenic 568 and sulphur 4.0%.
In embodiment 11, the hydrogen peroxide of variable quantity just added before starting flotation at once, and redox potential(Eh) after flotation starts, determined at once. Result is summarised in table 10. Fig. 7 has shown EhValue with institute add hydrogen peroxide itBetween the curve of relation. Fig. 7 has shown and has added a small amount of hydrogen peroxide, EhReduce, and add relatively large hydrogen peroxide, EhIncrease.
The variation of amount of hydrogen peroxide that table 10 adds
In embodiment 12 and 13, to every 0.5 minute, 2 minutes, 4 minutes and the concentrate collected for 8 minutes carried out flotation.In embodiment 12, do not have hydrogen peroxide to add. In embodiment 13, before flotation starts, horse back is with the amount of 50 grams, ore per tonAdd the aqueous hydrogen peroxide solution of 1 % by weight.
Fig. 8 has shown the relation curve between accumulation Cu Concentrate Grade and the accumulation copper recovery of embodiment 12 and 13. Table11 and 12 these results while having compared 80% copper recovery and 13% concentrate copper grade.
The rate of recovery of table 11 copper and Gold Concentrate under Normal Pressure grade, copper and dilution under 80% copper recovery
* not according to the present invention,
IS=iron sulfide, NSG=unsulfided mine tailing
Table 12 is copper and gold recovery and concentrate gold and dilution grade under 13% concentrate copper grade
* not according to the present invention,
IS=iron sulfide, NSG=unsulfided mine tailing.
Claims (8)
1. the method that reclaims copper sulfide from the ore of Containing Sulfur iron, comprises step:
A) utilize abrasive media to ore wet-milling, to form mineral slurry,
B) utilize trapping agent compound to regulate mineral slurry, form adjusted mineral slurry, and
C) the adjusted mineral slurry of flotation, forms foam and flotation tailing, isolates foam from flotation tailing, reclaims copper sulfideConcentrate,
Wherein by hydrogen peroxide with effective dose in step b) and c) or step join adjusted mineral slurry during c)In, to reduce the redox potential of adjusted mineral slurry.
2. the process of claim 1 wherein hydrogen peroxide is added redox potential is reduced at least amount of 10mV.
3. the method for claim 1 or 2, adds when wherein hydrogen peroxide was less than 15 minutes before introducing gas for flotation.
4. the method for claim 1 or 2, wherein flotation is carried out continuously, and hydrogen peroxide adds continuously during flotation.
5. the method for claim 1 to 4 any one, wherein hydrogen peroxide is as the water of the hydrogen peroxide that contains 0.5-5 % by weightSolution adds.
6. the method for claim 1 to 5 any one, wherein alkyl xanthogenic acid alkali metal salt is as trapping agent.
7. the method for claim 1 to 5 any one, wherein abrasive media comprises steel or the casting by iron-holder at least 90 % by weightThe lapped face that iron is made.
8. the method for claim 7, is wherein adjusted into the addition of hydrogen peroxide after hydrogen peroxide adds oxidation is providedThe maximum of reduction potential reduces.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361856405P | 2013-07-19 | 2013-07-19 | |
| US61/856,405 | 2013-07-19 | ||
| PCT/EP2014/064953 WO2015007652A1 (en) | 2013-07-19 | 2014-07-11 | Method for recovering a copper sulfide from an ore containing an iron sulfide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105592930A true CN105592930A (en) | 2016-05-18 |
| CN105592930B CN105592930B (en) | 2017-09-12 |
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| CN201480040873.3A Expired - Fee Related CN105592930B (en) | 2013-07-19 | 2014-07-11 | The method that copper sulfide is reclaimed from Containing Sulfur iron ore |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US20160158768A1 (en) |
| EP (1) | EP3021972B1 (en) |
| CN (1) | CN105592930B (en) |
| AP (1) | AP2016009051A0 (en) |
| AR (1) | AR096952A1 (en) |
| AU (1) | AU2014292219B2 (en) |
| CA (1) | CA2918639A1 (en) |
| CL (1) | CL2016000115A1 (en) |
| ES (1) | ES2686606T3 (en) |
| MX (1) | MX2016000514A (en) |
| PE (1) | PE20160462A1 (en) |
| PL (1) | PL3021972T3 (en) |
| RU (1) | RU2655865C2 (en) |
| WO (1) | WO2015007652A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111804441A (en) * | 2020-07-20 | 2020-10-23 | 中南大学 | Method for regulating and controlling flotation of high-sulfur iron-containing sulfide ore by adding oxygen producing agent in ore grinding process |
| CN111804440A (en) * | 2020-07-20 | 2020-10-23 | 中南大学 | Method for regulating and controlling sulfide ore flotation through dissolved oxygen content in ore pulp |
| CN115921118A (en) * | 2022-10-11 | 2023-04-07 | 昆明理工大学 | Novel composite inhibitor for separation of pyrite and chalcopyrite and beneficiation method |
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|---|---|---|---|---|
| WO2013110420A1 (en) | 2012-01-27 | 2013-08-01 | Evonik Degussa Gmbh | Enrichment of metal sulfide ores by oxidant assisted froth flotation |
| US9839917B2 (en) | 2013-07-19 | 2017-12-12 | Evonik Degussa Gmbh | Method for recovering a copper sulfide concentrate from an ore containing an iron sulfide |
| CN104772229B (en) * | 2015-04-16 | 2017-09-22 | 江西理工大学 | Silver ore middle-low grade association copper recovery process |
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| CN111804440A (en) * | 2020-07-20 | 2020-10-23 | 中南大学 | Method for regulating and controlling sulfide ore flotation through dissolved oxygen content in ore pulp |
| CN111804440B (en) * | 2020-07-20 | 2021-12-03 | 中南大学 | Method for regulating and controlling sulfide ore flotation through dissolved oxygen content in ore pulp |
| CN111804441B (en) * | 2020-07-20 | 2022-03-01 | 中南大学 | Method for regulating and controlling flotation of high-sulfur iron-containing sulfide ore by adding oxygen producing agent in ore grinding process |
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Also Published As
| Publication number | Publication date |
|---|---|
| CL2016000115A1 (en) | 2016-06-24 |
| AU2014292219A1 (en) | 2016-02-11 |
| RU2655865C2 (en) | 2018-05-29 |
| ES2686606T3 (en) | 2018-10-18 |
| PL3021972T3 (en) | 2018-12-31 |
| AR096952A1 (en) | 2016-02-10 |
| AP2016009051A0 (en) | 2016-02-29 |
| RU2016105557A3 (en) | 2018-04-02 |
| AU2014292219B2 (en) | 2017-03-30 |
| RU2016105557A (en) | 2017-08-24 |
| CN105592930B (en) | 2017-09-12 |
| WO2015007652A1 (en) | 2015-01-22 |
| PE20160462A1 (en) | 2016-06-02 |
| EP3021972B1 (en) | 2018-06-20 |
| EP3021972A1 (en) | 2016-05-25 |
| MX2016000514A (en) | 2016-04-07 |
| CA2918639A1 (en) | 2015-01-22 |
| US20160158768A1 (en) | 2016-06-09 |
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